T50.Z9
Header — not billablePoisoning by, adverse effect of and underdosing of other vaccines and biological substances
The ICD-10 code for poisoning by, adverse effect of and underdosing of other vaccines and biological substances is T50.Z9.
T50.Z9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under T50.Z9
- T50.Z91Poisoning by other vaccines and biological substances, accidental (unintentional)
- T50.Z92Poisoning by other vaccines and biological substances, intentional self-harm
- T50.Z93Poisoning by other vaccines and biological substances, assault
- T50.Z94Poisoning by other vaccines and biological substances, undetermined
- T50.Z95Adverse effect of other vaccines and biological substances
- T50.Z96Underdosing of other vaccines and biological substances
Related codes in this category
- T50.Z1Poisoning by, adverse effect of and underdosing of immunoglobulinnon-billable header
- T50.Z9Poisoning by, adverse effect of and underdosing of other vaccines and biological substancesnon-billable header